I just happened to spot this on the logitech site today (wasn't there yesterday!)
http://www.logitech.com/index.cfm/products/detailsharmony/US/EN,CRID=2084,CONTENTID=9933
Looks pretty amazing, and the MSRP is the same as the 688...
http://www.logitech.com/index.cfm/products/detailsharmony/US/EN,CRID=2084,CONTENTID=9933
Looks pretty amazing, and the MSRP is the same as the 688...